Dying to the jailer in one attempt is hardly worth losing a DPS over. Especially considering that's the only jailer in the fight who's threatening.
I wasn't saying that they should two tank it. I was saying that it's fallacious to say that he's not having problems when he's obviously having problems (hence the thread in the first place). Obv, there are solutions, and 1 or 2 tanks both are workable approaches.